In the world of Jujutsu Kaisen, all living beings emit Cursed Energy, fueled by negative emotion, which can manifest as Curses, vengeful spirits, ghosts or monsters. Jujutsu Sorcerers are individuals who can control this energy and use it for their own purpose, including performing unique Cursed Techniques. Advanced practitioners can create pocket dimensions called Domain Expansions, where their attacks are more potent and precise but there you are, who suddenly get transported into this world.